Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 9,063	$ 14,601
Restricted cash	1,240	1,354
Accounts receivable, net	1,006	1,478
Prepaid expenses and other current assets	2,839	2,769
Total current assets	14,148	20,202
Property and equipment, net	26,568	27,494
Project development costs	11,516	957
Other assets	217	1,181
Total assets	52,449	49,834
Current liabilities:
Accounts payable	2,805	2,079
Accrued expenses and other current liabilities	7,405	5,450
Total current liabilities	10,210	7,529
Long-term loan, related party	17,426	17,426
Total liabilities	27,636	24,955
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value, 150,000 shares authorized, 30,073 and 29,931 shares issued and outstanding in 2012 and 2011, respectively	300	299
Additional paid-in capital	146,083	145,204
Accumulated deficit	(128,425)	(127,479)
Total stockholders' equity	24,813	24,879
Total liabilities and stockholders' equity	52,449	49,834
Series A [Member]
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value—	0	0
Series B [Member]
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value—	0	0
Series E [Member]
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value—	$ 6,855	$ 6,855